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Re: [Qemu-devel] [PATCH v2] vnc: disable VNC password authentication (se
From: |
Daniel P. Berrange |
Subject: |
Re: [Qemu-devel] [PATCH v2] vnc: disable VNC password authentication (security type 2) when in FIPS mode |
Date: |
Thu, 3 May 2012 10:09:37 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Thu, May 03, 2012 at 11:06:18AM +0200, Alexander Graf wrote:
>
> On 03.05.2012, at 11:03, Daniel P. Berrange wrote:
>
> > On Thu, May 03, 2012 at 11:01:29AM +0200, Alexander Graf wrote:
> >>
> >> On 03.05.2012, at 10:57, Daniel P. Berrange wrote:
> >>
> >>> On Thu, May 03, 2012 at 10:51:15AM +0200, Alexander Graf wrote:
> >>>>
> >>>> On 03.05.2012, at 10:29, Daniel P. Berrange wrote:
> >>>>
> >>>>> On Wed, May 02, 2012 at 03:32:56PM -0400, Paul Moore wrote:
> >>>>>> FIPS 140-2 requires disabling certain ciphers, including DES, which is
> >>>>>> used
> >>>>>> by VNC to obscure passwords when they are sent over the network. The
> >>>>>> solution for FIPS users is to disable the use of VNC password auth
> >>>>>> when the
> >>>>>> host system is operating in FIPS mode.
> >>>>
> >>>> So that means "no password" is more secure according to FIPS than
> >>>> "DES encrypted password"?
> >>>
> >>> No, FIPS is not making statements about the choice of auth methods.
> >>> FIPS is concerned with what encryption algorithms an application uses.
> >>> The requirements about whether authentication is required & what sort,
> >>> is upto other specifications (eg Common Criteria) to decide.
> >>
> >> Hrm, so short-term this fixes things. But long-term, I think the
> >> better solution would be to implement the tight security model and
> >> use a real cipher:
> >
> > That is certainly possible, but shouldn't have any bearing on whether
> > this patch is accepted. Note that QEMU already implements VeNCrypt
> > and SASL extensions both of which provide strong security
>
> Hmm. Isn't the syslog message misleading then? Also, why would the
> whole password parameter be blocked then?
The password parameter is irrelevant for VeNCrypt & SASL authentication
types. They are configured via other parameters.
Daniel
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- [Qemu-devel] [PATCH v2] vnc: disable VNC password authentication (security type 2) when in FIPS mode, Paul Moore, 2012/05/02
- Re: [Qemu-devel] [PATCH v2] vnc: disable VNC password authentication (security type 2) when in FIPS mode, Daniel P. Berrange, 2012/05/03
- Re: [Qemu-devel] [PATCH v2] vnc: disable VNC password authentication (security type 2) when in FIPS mode, Alexander Graf, 2012/05/03
- Re: [Qemu-devel] [PATCH v2] vnc: disable VNC password authentication (security type 2) when in FIPS mode, Daniel P. Berrange, 2012/05/03
- Re: [Qemu-devel] [PATCH v2] vnc: disable VNC password authentication (security type 2) when in FIPS mode, Alexander Graf, 2012/05/03
- Re: [Qemu-devel] [PATCH v2] vnc: disable VNC password authentication (security type 2) when in FIPS mode, Daniel P. Berrange, 2012/05/03
- Re: [Qemu-devel] [PATCH v2] vnc: disable VNC password authentication (security type 2) when in FIPS mode, Alexander Graf, 2012/05/03
- Re: [Qemu-devel] [PATCH v2] vnc: disable VNC password authentication (security type 2) when in FIPS mode,
Daniel P. Berrange <=
- Re: [Qemu-devel] [PATCH v2] vnc: disable VNC password authentication (security type 2) when in FIPS mode, Alexander Graf, 2012/05/03
- Re: [Qemu-devel] [PATCH v2] vnc: disable VNC password authentication (security type 2) when in FIPS mode, Paul Moore, 2012/05/03
- Re: [Qemu-devel] [PATCH v2] vnc: disable VNC password authentication (security type 2) when in FIPS mode, Alexander Graf, 2012/05/03
Re: [Qemu-devel] [PATCH v2] vnc: disable VNC password authentication (security type 2) when in FIPS mode, Paul Moore, 2012/05/03
Re: [Qemu-devel] [PATCH v2] vnc: disable VNC password authentication (security type 2) when in FIPS mode, Alexander Graf, 2012/05/03